Thread gauge



Feb. 27, H923. 7 1,446,645

, B. M. w. HANSON THREAD GAUGE Filed NOV. '7, 1921 Patented Feb. 27, 1923..

UNETED stares.

BERG-'1 MI. W. HANSON",- OF HARTFORD, CONNECTICUT.

THREAD GAUGE.

Application area November'i, 1921. Serial no; 513,551.

To all whom it may concern:

Be it known th 't' 1, BE GT'M. Hanson, a citizen of the United States, and resident of Hartford, county of Hartford, State of Connecticut, have invented certain new useful: Improvements in a which the following is a specification.

and

Thread Gauge, of"

The aim of the present invention is to provide a thread gauge having various features of novelty and advantage, and which is particularly characterized by its simplicity in construction, economy in manufacture and the security and ease with which screw plug is fastened in place.

the

by a screw 6.

The handle a is preferably made from tubular stock, thus making for cheapness in wedge 0 extends through diametrically posed openings 10, 11 in registering opening 12 in the block, the

manufacture and lightness in weight. The

dis-

the handle and a latter opening along its innermost side being tapered as at 13. The gauge plug (I comprises a cylindrical member threaded from end to end and with its surfaces 1 1, 14

flat

and perpendicular to the axis of the plug.

The screw 6 has a head 15 overlying outer end of the screw plug, a stem 16 tending through an axial opening in the exthe plug (Z, and an inner threaded end 17 adapted to be screwed into a threaded recess 18 in the forward end of the block b. The recess 18 is counterbored as at 19 so as to snugly receive the stem 16 of the screw.

Thehead 15 of the screw is preferably of substantially the same diameter as the ameter of the plug measured at the root of the thread.

In securing the screw plug in place, wedge c is held in partially withdrawn the sition, and the screw 15 is then turned by means of a screw-driver (the blade of which is inserted in the kerf in the head of screw) until the rear held under pressure against the end of handle.

thus forcing the block b inwardly of handle and urging the plug against the of the handle with considerable force.

the

end of the plug is the The wedge 0 is then driven home,

the end y the use of the wedge, the parts are held. so-tightly and securely in position that there is no no possibility of the plug turning relative to the handle or the parts bccomin loose, which might bethecase if the screw alone were relied upon to'hol'd' the parts in position.

Since the plughas no bosses or projections at its ends which would require machining, this screw plug may be more economically manufactured. The plug is reversible so that in the event one face of the thread thereon becomes worn, the plug may be turned end for end and the other face of the thread employed for gauging purposes. The head of the screw 6, which may be easily machined, serves as a guide for bringing the plug into the threaded opening to be gauged, irrespective of which end of the plug is foremost.

It will be seen from the foregoing description that I provide a thread gauge which is very simple in construction and wlherein the parts are securely fastened in p ace.

It is, of course, obvious that my invention is susceptible of various modifications and changes which are within the spirit of the invention without departing from the 5 scope of the following claims, it being understood that the present disclosure of my invention is by way of illustration only and it is not to be taken as restrictive of my conception.

I claim as my invention 1. A device of the character described in cluding a handle, an adjustable part carried thereby, a gauge member, rotatable means for securing said member to said. part, and means for binding said part relative to said handle.

2. A device of the character described in-- eluding a handle, an adjustable part car-- ried thereby, a screw gauge member, screw threaded means for securing said member to said part, and a wedge for adjusting and fastening said part relative to said handle.

3. A device of the character described including a handle, a block adjustably can ried thereby, a. gauge member, a screw securing said member to said block, and a wedge cooperating with said handle and block for securing the latter in place with said member tightly engaged against said handle.

4:. A device of the character described in-- eluding a tubular handle having diametri-- cally opposite openings, a block "slidably mounted in said handle and having an open-- ing registering with the openings thereof, a screw plug abutting said handle,a screw extending through said plug and having threaded engagement with said bloclru and a wedge positioned in the openings of said handle and block.

5. A device of the character described in cluding a handle, a cylindrical screw vplug having a through. more, and a screw extending through said bore and cooperatively connected to said handle, said screw having a head engaging and extending beyond the outer end of said plug, said head being of substantially the same diameter as the root ,of the thread on said plug and constituting mamas a guide for directing the plug into the threaded opening to be gauged; I

6. A device of the character described comprising a tubular handle having transverse openings adapted toreceive a Wedge a block slidably mounted in said handle and having a tapered opening registering with said transverse openings, a reversible screw plug either end of which is adapted to abut against said handle a screw extending through said plug and having, threaded engagement with said block, and a wedge in said openings, said screw having-a head abutting against and extending beyond, the outer end of the plug and constituting guide ineans for directing the plug into the threaded openin to be gauged.

shiver M. W. HANSON. 

